Shuttle bobbin take-up mechanism



2,417",41 i v s Robert J. Loos, sterling, lll., assigoor to Reynolds Wire Co., Dixon; Ill., ai corporation of Illinois Applioation January 2, 1946, serial No. 638,672

invention relatos to a 'shuttle bobbin takeup mechanism. The invention is designed for use in looms for weaving wirealthough it is equally applicablek for weaving fabric cloth.r

vAs the shuttle passes through the shed of the warp of .the loom the bobbin rotates in reeling out weft wire,. and `when the shuttle comes to a stop, the bobbintendst continue to rotate due. to .its-inertia. Most shuttlesf are provided'with as'upporting means uponfwhich the bobbin is mounted'A and which has a friction surface-reacting tothe rotation of the bobbin, and rotating therewith. Means is then provided for limiting theI rotation of the supporting means and'after rotation of the supporting means has been checked,v the rotating bobbinovercomes the vfriction between itself and the supporting means and continuesto rotate with respect to-.the supporting means.

I provide a supporting means forming a novell' feature of my invention. It `is in the formV of a cone and will be hereinafter referred-to as such'. Thebobbin proper. is provided` withY a memberA cooperating in shape with the-conejand fitting thereover. The shuttle is so designed-that the Yielding means in the form of a clock springis mounted on theA shuttle body and engages .the conefonyieldingly limiting rotation V0l? thejcone Qn-thesh'uttle in one direction. -Thisalso helps tov maintain-l uniiorm--tension onthe,A wire;- The` spring. resists the *i normal tendency --of the conerotate with-the bobbin-.- Whenfhowever, the

limit of rotation of -the cone `onthe shuttle-is reached, the bobbin, in spite ofthe-friction with:

the cone rotates with respect to the c0ne. Wheneyer the pull'on the wire permits, jthespringwill tendlktore'wind to compensateffor unevenness in- -l with the coneto provide a safety feature in" the eventv the "weft wire breaks. If the weft wire.' should break, the spring would reverse the rota-` .tion of the cone which. on continued .rotationin i the reverse direction beyond the point where' the spring Ahas reached its fully recoiled condition,v`

would break ork distort the spring butior this; safety feature. The releasable connection. per-. mits unrestricted rotation 4of the cone Yin .thereverse direction free of the controlA of the/spring..

An 'object of the invention -is V'the provision of'a" novel structural shape for producing fri'c'tionbe-` tween the bobbin ofv a shuttle and the supporting means therefor. y y

Another object is to provide an 'arrangement whereby the weight of the bobbin and the Wire.

v 25` weight of the bobbin adds to the effectiveness-of the v:Irictional engagement described. When -the- 30, is therefore to maintain uniform'tensi'on onthe,l

thereon directlyaiects the friction betweenthe bobbin and its supporting means. A Still another object is the provision of spring means forsupplementing the weight of the'bobv-- bin in thus producing friction. f Withthese vand other `objects in View; my invention consists in the construction, arrange-A ment and. combination ofl the' Various parts, of-

my device whereby the objects contemplated are'y attained, as hereinafter more fullyset forth, pointed out'inthe claims, and illustrated inthe accompanying drawings, in which: y

. Fig.. 1 is a vertioal'sootional view ofthe device and,.,--.` vl Fig. 2 yis', a sectional 4view takenon 'line 2 2 of' Fig. 1, and looking in the direction -indicatedby4 the arrows on the sectionline of Figure 1.

j Referring now in 'detail to the drawings, a-

g shuttle body is shown at S. Coacting carrying arms' IU' and Il carry the shuttle back and for-thv` through the warp shed. Shown generally at* I2- is a. latcliing mechanismffin latching the shuttle tothe carrying arms. 7 f

round fpo'sti Ill is rigidlysupported inslaanVA opening I5 in the rounded portion I6 of the's-hutT- tle body and riveted vat' I'I thereto. The upper outer. end ofthe post is'of reduced diameter as shown at I9. Supported on the post I4 is a supporting member 20 in the `form of a truncated cone v.which has awreduced cylindrical portion 2l at its larger lower end extending'into the cavity' 221. in the shuttle body. The cone20 is provided with` anfaxial bore 24- considerably larger in di;

ameter than the post I 4 for free rotation thereon, and this bore is enlarged to form a well 25 in the upper or small end of the cone. The cone 29 is supported on the post I4 by means of anti-friction bearings 29 and 21. Supported on the cone 29 for rotation with respect thereto is a hollow Winder 29, being cylindrical in outer contour, and having its interior bored comparable to the shape of the cone 29. The hollow Winder 29 ts over the cone 29, and has secured to its inner surface a friction material 39 for engaging the outer surface of the cone 29. This friction material may be leather or any other durable material which will provide sufficient friction. The hollow Winder also has a ange 3| at its inner lower end.

The cone 29 may be considered a wedge member, since the hollow Winder 29 on being brought into engagement therewith produces an actual wedging effect. The outer end of the hollow Winder has an enlarged rabbet 32 in which@ flange 34 of a Winder transfer cup 35 is press fitted. The body of the Winder transfer cup 35 fits into the well 25 and has a central opening 3.6 in the center which loosely fits over the reduced outer end I 9 of the post I 4. Roller bearings 38 are interposed between the body of the transfer cup 35 and the well 25 to prevent any tipping eiect between the Winder 29 and the cone 29 which would cause uneven Wear on the friction material 39. A compression spring 31 is inserted into the transfer cup 35 supported o-n anti-friction bearing 39 positioned between the spring 31 andthe bottom of the transfer cup and is held therein by a nut 49 on the outer end of the post I9. The nut 49 is slotted as shown at 4I and a lockscrew 42 passes through the ears formed thereby to lock the nut in place.'

A bobbin 44 with a central opening to lit the hollow Winder 29 is placed over the hollow Winder and rests on flange 3l. The bobbin has keyways 45 which receive keys 46 on the cone 29 for securing the bobbin for rotation with the hollow Winder. Keys 46 are in the form of blocks secured to Winder 29 by screws or other similar means. Fig. 1 shows the position in which the shuttle will assume when in use. The bobbin is merely slid over the hollow Winder for placing it in the proper position. In this position the Weight of the bobbin effectively biases the hollow Winder into frictional engagement with cone 29.

The Winder transfer cup 35 rotates with the Winder 29, and rotates freely on the post 29. The compression spring 31, acting through the Winder transfer cup 35, biases the Winder downwardly and thereby adds to the Weight of the bobbin in bringing the Winder into frictiona] engagement with the cone 29.

A coil spring 41 similar t0 a clock spring is positioned in the cavity 22 of the shuttle body and surrounds the reduced cylindrical portion 2l of the cone supporting member 29. One end of the spring 41 is rigidly secured at 49 on a post fixed in the shuttle body. The inner end vof, the spring is formed with a hook 59 which fits into a V- shaped notch 48 in the periphery of the reduced portion 2| ofthe cone 29.

Operation In normal operation when the shuttle is passed through the Warp shed, weft Wire on the bobbin is unreeled, rotating the bobbin as indicated by the arrow 53 in Fig. 2. In the initial rotation of the bobbin, the friction existing between the cone 29 and the hollow Winder 29 causes the cone 29 to rotate with the bobbin, The spring 41 being conynot unreel slack wire.

nected to the cone is tensioned and permits rotation of the cone to a limited extent, or until the spring is fully tensioned, and thereafter the rotation of the bobbin overcomes the friction existing between the cone 29 and the hollow Winder 29. The bobbin and the hollow Winder then rotate with respect to the cone.

The tendency of the spring 41 is to bias the cone 29 inthe direction opposite to the unreeling direction, and when the shuttle completes its passage through the warp shed and comes to a stop, the force which unreeled the weft wire has ceased and friction is then built up again between the cone 29 and the hollow Winder 29. Therefore, the bobbin comes to a stop and does 'Ihe spring 41 yields enough to compensate for uneven impulses occuring in the motion of the bobbin, this action assuring even an-d uniform tautness in the weft Wlre.'

In the event the weft wire breaks, the force of the spring 41 reacting against the cone 29 reverses the rotation of the cone (and the bobbin) in a direction indicated by the arrow 5I. On continued rotation of the cone in the latter directionthe spring 41 resumes its original, or fully recoiled condition. If the spring were xedly connected to the cone, the cone after it reached this point would break or distort the spring. By the present arrangement the hook 59 on the inner end af the spring 41 is displaced out of the notch 48 permitting the cone to rotate free of the spring.

Although I have herein shown and described a preferred embodiment of my invention, manifestly it is susceptible of modification and rearrangement of the parts without departing from the spirit and scope thereof. I do not, therefore, wish to be understood as limiting my invention to the precise form herein disclosed, except as I may be so limited by the appended claims.

I claim as my invention:

1. The combination of a shut-tle body, with a post rigidly secured in the shuttle body, a cone rotatably mounted on said post, a hollow Winder rotatably mounted on said cone, friction means disposed between said cone and said hollow Winder, spring means coacting between said cone and said hollow Winder, and means on said hollow Winder for non-rotatably supporting a bobbin, the effectiveness of said friction means being responsive to the Weight of the bobbin and said spring means.

2. The combination of a shuttle body with a post rig-idly secured in the shuttle body, a cone rotatably mounted on said post, a hollow Winder rotatably mounted von said cone, friction means disposed between said cone and said hollow Winder, spring means biasing said cone and said hollow Winder into engagement, means on said hollow Winder for supporting a bobbin, and means interposed between said cone and the shuttle body for limiting rotation of said cone.

3. The combination of a shuttle body with a post rigidly secured in the shuttle body, a cone rotatably mounted on said post, a hollow Winder rotatably mounted on said cone, friction means disposed between said cone and said hollow Winder, spring means biasing said cone and said hollow Winder into engagement, means on said hollow Winder for supporting a bobbin, and means carried by the shuttle body for yieldingly limiting rotation of said cone in one direction.

4. In a shuttle structure for looms including a shuttle body, the combination of a cone rotatably mounted on`the shuttle body, ahollow Winder: rotatably mounted on saidcone, friction means disposed' between said cone and said hollow Winder, spring means biasing said cone and said hollow Winder into engagement, means on said hollow WinderA for supporting a bobbin, and means carried by the shuttle body releasably connected to said conefor limiting rotation of said cone in one direction, said cone being free for unrestricted rotation in the opposite direction.

5. A'shuttle structure for looms comprising, in combination, a shuttle body, a cone rotatably mounted on the shuttle body, there being a Well formed in the small end of said cone, a hollow Winder rotatably mounted on said cone, friction means disposed between lsaid cone Aand said hoiloW Winder, a Winder transfer cup supported by said hollow Winder and extending into the well in said cone, and spring means in said transfer cup coacting between said cone and said hollow Winder for biasing them into frictional engagement.

6. A shuttle structure for looms comprising, in combination, a shuttle body, a post rigidly secured in the shuttle body, a cone rotatably mounted on said post, there being a well formed in the small end of said cone, a hollow Winder rotatably mounted on said cone, friction means disposed between said cone and said hollow Winder, a Winder transfer cup supported by said hollow Winder and extending into the well in said cone, and surrounding said post, spring means in said ytransfer cup and surrounding said post, and retention means secured on the outer end of said post for retaining said spring means in said transfer cup, said spring means coacting between said retention means and said transfer cup for biasing said cone and said hollow Winder into frictional engagement.

'7. A shuttle Structure for looms comprising, in combination, a shuttle body, a cone rotatably mounted on the shuttle body, there being a Well formed in the small end of said cone, a hollow Winder rotatably mounted on said cone, friction means disposed between said cone and said hollow Winder, means on said hollow Winder for supporting a bobbin, the assembly being so arranged that the Weight of the bobbin biases said cone and said hllow Winder into frictional engagement, a Winder transfer cup supported by said hollow Winder and extending into the Well in said cone, and spring means in said transfer cup coacting between said cone and said hollow Winder and supplementing the Weight of the bobbin for biasing said cone and said hollow Winder into frictional engagement.

8. A shuttle structure for looms comprising, in combination, a, shuttle body, a post rigidly se- :cured in the shuttle body, a cone rotatably mounted on said post, there being a Well formed in the small end of said cone, anti-friction bearing means supporting said cone on said post, a hollow Winder rotatably mounted on said cone, friction means disposed between said cone and said hollow Winder, a Winder transfer cup supported by said hollow Winder and rotatable therewith, said transfer cup extending into the Well in said cone and surrounding said post, spring means in said transfer cup and surrounding said post, retention means secured on the outer end of said post for retaining said spring means in said transfer cup, said spring means coacting between said retention means and said transfer cup for biasing said cone and said hollow Winder into frictional engagement, and anti-friction bearing' means disposed between said spring means and said transfer cup.

' 9. A shuttle structure for looms comprising, ini

l rotatably mounted on the shuttle body, a coperating wedge member rotatably mounted on said Wedge member, friction means disposed between said Wedge member and said cooperating member, means on said cooperating member for supporting a bobbin, the assembly being so arranged that the Weight of the bobbin biases said Wedge member and said cooperating member into frictional engagement, and spring means coacting between said Wedge member and said cooperating member and supplementing the Weight of the bobbin for biasing said Wedge member and said cooperating member into frictional engagement.

11. In a shuttle bobbin take-up mechanism, a shuttle body, a cone rotatably mounted on the body, a hollow Winder rotatably supported on the cone, and adapted t'o hold a bobbin, friction means between the cone and the hollow Winder, and means for yieldably biasing the hollow Winder into frictional engagement With the cone.

12. In a shuttle bobbin take-up mechanism, a shuttle body, a cone rotatably mounted on the body, a hollow Winder rotatably supported on the cone, and adapted to hold a bobbin, friction means between the cone and the hollow Winder, means for yieldably biasing the hollow Winder into frictional engagement with the cone, and yielding means interposed between the cone and shuttle body for limiting relative movement of the cone on the shuttle body in one direction, said yielding means being adapted to release the cone for movement in the other direction.

13. In a shuttle bobbin take-up mechanism, a shuttle body, a supporting member rotatably mounted on the body, a hollow Winder rotatably supported on the supporting member, and adapted t0 hold a bobbin, friction means between the supporting member and the hollow Winder, and means for yieldably biasing the hollow Winder into frictional engagement With the supporting member.

14. A shuttle structure for looms comprising, in combination, a shuttle body, a cone rotatably mounted on the shuttle body, there being a Well formed in the small end of said cone, a hollow Winder rotatably mounted on said cone, friction means disposed between said cone and said hollow Winder, a Winder transfer cup supported by said hollow Winder and extending into the well in said cone, bearing means in said Well between said transfer cup and said cone, and spring means in said transfer cup coacting between said cone and said hollow Winder for biasing them into frictional engagement.

15. In a shuttle bobbin take-up mechanism, a shuttle body, a supporting member rotatably mounted on the body, a hollow Winder rotatably supported on the supporting member, and adapted to hold a bobbin, friction means between the. supporting member and the hollow Winder, means forryieldably biasing the hollow Winder into frictional engagement with the supporting member, and bearing means separate from said friction means for maintaining aligned relationship between said hollow Winder and said supporting member.

16. A shuttle structure for looms comprising, in combination, a shuttle body, a wedge member rotatably mounted on the shuttle body, a cooperating wedge member rotatably mounted on said wedge member, friction means disposed between said wedge member and` said cooperating member, bearing means separate from said friction means for maintaining aligned relationship between said wedge member and said'cooperating member, and means on said cooperating member' The following references are of record in the le of this patent:

UNITED STATES PATENTS 10 Number Name Date 566,689 Kintzing Aug. 25, 189,6 627,263 Heindel June 20, 1899 693,164 Seitz Feb. 11, 1902 1,890,008 Thompson Deo. 6, 1932 15 1,373,268 Southwick Mar. 29, 1921 '761,283 Berthelot May 3, 1904 

